Thales

Pierre Bertram

Georges Peyresoubes Peyresoubes

Eric Souchard

Olivier Ruffenach

Yannick Menard

Christophe Desevedavy

Hugues Augereau

An electronic radio system for power amplification of a radiofrequency signal having an electronic circuit having at least one in-service amplifier component, a detector measuring at least one electrical parameter of the in-service amplifier component, having at least the intensity of the electric current supplying the in-service amplifier component, a power attenuator adjusting the output power of the electronic circuit, and a programmable circuit receiving and transmitting commands to control the modules of the radio electronic system. The programmable circuit furthermore includes means for obtaining at least one measurement value relating to the intensity of the electric current supplying said in-service amplifier component of said detector and means for controlling said power attenuator in the case where at least one measurement value obtained exceeds a predetermined threshold value corresponding thereto. The invention also relates to an associated electronic circuit protection method.

Electronic radio system for power amplification with protection in terms of standing wave rate and associated method of protection

A compact and low-cost radiofrequency coupler, notably for the production of radiofrequency transmitters, includes a transmission line and a measuring line, the measuring line being coupled to the transmission line by the intermediary of windings, the transmission line, the measuring line and the windings being printed on a printed circuit board, upon which is fixed, by a clip-on technique, a binocular ferrite core that is essentially planar and E-shaped and whose central branch is disposed between the transmission line and the measuring line and whose distal branches are disposed in the central region of the planar windings.

Compact radiofrequency coupler

An RF impedance transformer having a parallel low-impedance access Eb and serial high-impedance access Eh and intended for connection onto a printed circuit. The transformer includes a multilayer circuit that includes a long side and at least three layers. A first outer layer is separated from a second outer layer of the same thickness by at least one inner layer having a thickness at least four times greater than the thickness of the outer layers, each outer layer comprising an electrical conductor on each surface for forming a microstrip line, the serial high-impedance access Eh and the parallel low-impedance access Eb being on the long side of the multilayer circuit and near to each other so as to limit the area for connection with the printed circuit.

Compact planar VHF/UHF power impedance transformer

A frequency generator generating an output signal having a predetermined output frequency, including: a local oscillator generating a reference signal having a reference frequency, and a phase-locked loop, the phase-locked loop provided with a controlled oscillator generating the output signal having the output frequency as a function of the signal at its input, and a comparator providing a signal to the controlled oscillator as a function of a phase and/or frequency comparison of a first comparison signal based on an input signal applied to a first input of the phase-locked loop with a second comparison signal based on the output signal, the frequency generator further including at least one harmonic generator generating, from the reference signal, a harmonic signal including a predetermined harmonic of the reference signal, the frequency generator applying the harmonic signal of one of the harmonic generators to the first input of the phase-locked loop.

Frequency generator for radiofrequency equipment and method for generating an output signal

The invention relates to a method for adapting an electronic component with leads that are not suited to surface mounting on an electrical circuit. The method includes a step of bending said leads. The bending step shapes the leads of said component so that they are suitable for mounting on the surface of the electrical circuit. In particular, the invention applies to electronic components such as radio frequency and microwave power transistors, marketed notably in a straight-lead version.

Method for adapting an electronic component for surface mounting

The present invention relates to a power coupler for hyperfrequency signals. The single-section coupler with microstrip lines comprises a dielectric substrate, a main line and a secondary line comprising a coupling section, the lines being deposited on the substrate, the main line being substantially rectilinear and uniform over its entire length, the coupling section comprising a protuberance at each of its ends, the protuberances being interlinked by a portion of conductive line of which the section, the shape and the disposition are adapted to minimize the coupling between said portion and the main line relative to the coupling made between the protuberances and the main line. The invention applies notably to the measurement of the power of a signal passing through a transmission line.

Growing community of inventors

Jallais, France

Pierre Bertram